Download or read book Principios de modelado y metodos en optimizacion parte I written by Juan Gaytan Iniestra and published by . This book was released on 1992 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optimizaci n lineal written by Miguel Ángel Goberna and published by . This book was released on 2004 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: La optimización (o programación) lineal (PL) se ocupa de aquellos problemas de decisión en los que el objetivo (utilidad o pérdida) se expresa como función lineal de las llamadas variables de decisión y los requisitos que deben satisfacer dichas variables se formulan mediante ecuaciones e inecuaciones lineales cuyo conjunto solución es un poliedro convexo llamado conjunto factible. La primera parte del libro se ocupa de los problemas de decisión, en general, con especial énfasis en aquellos que se formulan o aproximan mediante modelos de PL. La segunda parte se ocupa de la teoría de la PL (cuyo núcleo es la teoría de la dualidad) y de sus disciplinas inseparables: sistemas lineales y poliedros. La tercera parte, por último, describe los principales métodos numéricos de la PL.

Download or read book Solving competitive location problems via memetic algorithms High performance computing approaches written by Juana López Redondo and published by Universidad Almería. This book was released on 2009-02-19 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: La localización de servicios (“Facility location” en inglés) pretende encontrar el emplazamiento de uno o más centros (servicios) de modo que se optimice una determinada función objetivo. Dicha función objetivo puede, por ejemplo, tratar de minimizar el coste de transporte, proporcionar a los clientes un servicio de forma equitativa, capturar la mayor cuota de mercado posible, etc. La localización de servicios abarca muchos campos, como la investigación operativa, la ingeniería industrial, la geografía, la economía, las matemáticas, el marketing, el planning urbanístico, además de otros muchos campos relacionados. Existen muchos problemas de localización en la vida real, como por ejemplo, la localización de hospitales, de colegios o vertederos, por nombrar algunos. Para ser capaces de obtener soluciones a los problemas de localización, es necesario desarrollar/diseñar un modelo que represente la realidad lo más fielmente posible. Dichos modelos pueden llegar a ser realmente difíciles de tratar. Muchos algoritmos de optimización global, exactos y heurísticos han sido propuestos para resolver problemas de localización. Los algoritmos exactos se caracterizan por ser capaces de obtener el óptimo global con una cierta precisión. Sin embargo, suelen ser altamente costosos desde el punto de vista computacional, lo que implica que, en determinados casos, sea imposible aplicarlos para resolver un problema. Los algoritmos heurísticos se alzan entonces como una buena alternativa. No obstante, en determinadas circunstancias, los requerimientos computacionales son tan elevados, que el uso de algoritmos heurísticos ejecutándose en procesadores estándares no es suficiente. En tales situaciones, la computación de altas prestaciones es necesaria. Esta tesis, “Solving competitive location problems via memetic algorithms. High performance computing approaches” (Algoritmos meméticos para problemas de localización competitiva. Computación de altas prestaciones), proporciona, por un lado, algoritmos heurísticos capaces de resolver problemas de localización, tanto en el dominio continuo como en el discreto y, por otro lado, técnicas paralelas que permiten reducir el tiempo de ejecución, resolver problemas más grandes, e incluso en ocasiones mejorar la calidad de las soluciones. Esta tesis incluye tres partes bien diferenciadas, cada una de las cuales se divide en varios capítulos. La primera parte Preliminaries (Preliminares), está compuesta por tres capítulos que revisan el estado actual de la optimización global, de la computación de altas prestaciones y de la ciencia de la localización, respectivamente. El Capítulo 1 comienza con la definición de los problemas de optimización, y continúa con la introducción de diferentes métodos heurísticos para tratar con ellos. El Capítulo 2 describe brevemente algunas de las arquitecturas paralelas y de los modelos de programación paralelos. Finalmente, en el Capítulo 3, se describen y analizan los principales ingredientes de la localización de servicios, y se presenta una revisión sobre problemas de localización continuos y discretos. La segunda parte de la tesis, Solving continuous location problems (Resolviendo problemas de localización continua), comienza en el Capítulo 4, donde se presenta un problema de localización competitiva en el plano y se revisan dos técnicas previamente propuestas en la literatura para resolverlo. Posteriormente, se describe una nuevo algoritmo evolutivo para resolver óptimamente el problema, llamado UEGO, y se comparan todas las alternativas. Finalmente, varias estrategias paralelas basadas en el algoritmo UEGO son analizadas y evaluadas. En el Capítulo 5, el problema de localizar un solo centro en el plano, se extiende al caso en el que la cadena o empresa quiere emplazar más de un servicio. Para abordar este problema, se adapta el algoritmo UEGO presentado en el Capítulo 4, además de otras técnicas descritas en la literatura. A través de un extenso estudio computational, todas los algoritmos son comparados y se concluye que UEGO es el mejor de todos ellos, tanto por su eficiencia como por su efectividad. UEGO es usado para realizar un estudio de sensibilidad con el fin de chequear los cambios de diseño/localización óptima cuando los parámetros del modelo cambian. Finalmente, se presentan y evalúan varias técnicas paralelas para tratar el problema de localización de varios centros. El Capítulo 6 está dedicado al problema de líder-seguidor. En dicho problema, tras la localización del líder, el competidor reacciona localizando otro nuevo centro en el lugar que maximice su propio beneficio. El objetivo del líder es encontrar la solución que maximice su beneficio, sabiendo que posteriormente, la competencia localizará un nuevo centro. Por tanto, hay que resolver dos problemas simultáneamente: el problema del seguidor, también denominado medianoide, y el problema del líder o centroide. El modelo del problema del líder-seguidor se describe al principio del capítulo. Posteriormente, se proponen y evalúan varios algoritmos para resolver tanto el problema del medianoide como el del centroide. El capítulo finaliza con la paralelización de uno de los algoritmos propuestos. La tercera parte de la tesis, Solving discrete location problems (Resolviendo problemas de localización discreta), comienza en el Capítulo 7 con una introducción sobre algunos problemas de localización discreta. Este capítulo analiza aquellos casos en los que dichos problemas podrían presentar varias soluciones óptimas. Además, se muestra cómo un usuario experimentado podría obtenerlas, y se establecen algunos criterios para seleccionar una solución óptima entre diferentes alternativas. El capítulo finaliza con la descripción del algoritmo MSH, un heurístico ampliamente usado en la literatura para la resolución de problemas de localización discreta. El Capítulo 8 describe un algoritmo genético multimodal, GASUB, capaz de resolver varios problemas de localización discreta. El algoritmo tiene diferentes parámetros de entrada que pueden ser ajustados para alcanzar diferentes metas. En este capítulo, el objetivo es obtener al menos una solución óptima, pero invirtiendo el menor esfuerzo (tiempo) computacional posible. Para tal fin, se lleva a cabo un estudio previo y se determina el conjunto de parámetros adecuado. GASUB, con este conjunto de parámetros, es comparado con el optimizador Xpress-MP y con la heurística MSH, los cuales son capaces de obtener un único óptimo global (de manera directa). Sin embargo, teniendo en cuenta que los problemas de localización discreta considerados en esta tesis pueden tener más de una solución óptima, en el Capítulo 9 se analiza la posibilidad de explotar las propiedades multimodales de GASUB. Con este fin, se propone un nuevo conjunto de parámetros, con el que GASUB es nuevamente evaluado. Finalmente, se da una paralelización de GASUB y se estudian algunas de las soluciones globales encontradas por los algoritmos. La tesis finaliza con un resumen sobre los principales resultados obtenidos y sobre la líneas de investigación futura.

Download or read book Memoria de composici n arquitect nica 2011 13 written by Díez Medina, Carmen and published by Prensas de la Universidad de Zaragoza. This book was released on 2014-07-31 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: Composición Arquitectónica 1: Historia y análisis del proyecto arquitectónico: de Grecia a la Edad Media. Composición Arquitectónica 2: Historia y análisis del proyecto arquitectónico: del Renacimiento al siglo de las revoluciones. Composición Arquitectónica 3: Historia y análisis del proyecto arquitectónico: de la gestación de las vanguardias a la Primera Guerra Mundial. Composición Arquitectónica 4: Historia y análisis del proyecto arquitectónico: de las revisiones de la Modernidad a las últimas tendencias. Arquitectura e Ingeniería del siglo xx: Representación y construcción de una Modernidad intermedia. Paisajes Culturales: Desarrollo del programa europeo Teruel Life+.

Download or read book Qualitative Choice Analysis written by Kenneth Train and published by MIT Press. This book was released on 1986 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses two significant research areas in an interdependent fashion. It is first of all a comprehensive but concise text that covers the recently developed and widely applicable methods of qualitative choice analysis, illustrating the general theory through simulation models of automobile demand and use. It is also a detailed study of automobile demand and use, presenting forecasts based on these powerful new techniques. The book develops the general principles that underlie qualitative choice models that are now being applied in numerous fields in addition to transportation, such as housing, labor, energy, communications, and criminology. The general form, derivation, and estimation of qualitative choice models are explained, and the major models - logit, probit, and GEV - are discussed in detail. And continuous/discrete models are introduced. In these, qualitative choice methods and standard regression techniques are combined to analyze situations that neither alone can accurately forecast. Summarizing previous research on auto demand, the book shows how qualitative choice methods can be used by applying them to specific auto-related decisions as the aggregate of individuals' choices. The simulation model that is constructed is a significant improvement over older models, and should prove more useful to agencies and organizations requiring accurate forecasting of auto demand and use for planning and policy development. The book concludes with an actual case study based on a model designed for the investigations of the California Energy Commission. Kenneth Train is Visiting Associate Professor in Economics at the University of California, Berkeley, and Director of Economic Research at Cambridge Systematics, Inc., also in Berkeley. Qualitative Choice Analysisis included in The MIT Press Transportation Studies Series, edited by Marvin L. Manheim.

Download or read book IV Latin American Congress on Biomedical Engineering 2007 Bioengineering Solutions for Latin America Health September 24th 28th 2007 Margarita Island Venezuela written by Carmen Müller-Karger and published by Springer Science & Business Media. This book was released on 2007-11-09 with total page 1307 pages. Available in PDF, EPUB and Kindle. Book excerpt: The IV Latin American Congress on Biomedical Engineering, CLAIB2007, corresponds to the triennial congress for the Regional Bioengineering Council for Latin America (CORAL), it is supported by the International Federation for Medical and Biological Engineering (IFMBE) and the Engineering in Medicine, Biology Society (IEEE-EMBS). This time the Venezuela Society of Bioengineering (SOVEB) organized the conference, with the slogan Bioengineering solution for Latin America health.

Download or read book Fuzzy Multi Criteria Decision Making written by Cengiz Kahraman and published by Springer Science & Business Media. This book was released on 2008-08-09 with total page 591 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work examines all the fuzzy multicriteria methods recently developed, such as fuzzy AHP, fuzzy TOPSIS, interactive fuzzy multiobjective stochastic linear programming, fuzzy multiobjective dynamic programming, grey fuzzy multiobjective optimization, fuzzy multiobjective geometric programming, and more. Each of the 22 chapters includes practical applications along with new developments/results. This book may be used as a textbook in graduate operations research, industrial engineering, and economics courses. It will also be an excellent resource, providing new suggestions and directions for further research, for computer programmers, mathematicians, and scientists in a variety of disciplines where multicriteria decision making is needed.

Download or read book Optimal Regulation written by Kenneth Train and published by Mit Press. This book was released on 1991 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optimal Regulation addresses the central issue of regulatory economics - how toregulate firms in a way that induces them to produce and price "optimally." It synthesizes the majorfindings of an extensive theoretical literature on what constitutes optimality in various situationsand which regulatory mechanisms can be used to achieve it. It is the first text to provide aunified, modern, and nontechnical treatment of the field.The book includes models for regulatingoptimal output, tariffs, and surplus subsidy schemes, and presents all of the material graphically,with clear explanations of often highly technical topics.Kenneth E. Train is Associate AdjunctProfessor in the Department of Economics and Graduate School of Public Policy at the University ofCalifornia, Berkeley. He is also Principal of the firm Cambridge Systematics.Topics include: Thecost structure of natural monopoly (economies of scale and scope). Characterization of firstandsecond-best optimality. Surplus subsidy schemes for attaining first-best optimality. Ramsey pricesand the Vogelsang-Finsinger mechanism for attaining them. Time-ofuse (TOU) prices and Riordan'smechanisms for attaining the optimal TOU prices' Multipart and self-selecting tariffs, and Sibley'smethod for using self-selecting tariffs to achieve optimality. The Averch-Johnson model of howrate-of-return regulation induces inefficiencies. Analysis of regulation based on the firm's returnon Output, costs, or sales. Price-cap regulation. Regulatory treatment of uncertainty and its impacton the firm's behavior. Methods of attaining optimality without direct regulation (contestability,auctioning the monopoly franchise.)

Download or read book Time Series Prediction written by Andreas S. Weigend and published by Routledge. This book was released on 2018-05-04 with total page 665 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is a summary of a time series forecasting competition that was held a number of years ago. It aims to provide a snapshot of the range of new techniques that are used to study time series, both as a reference for experts and as a guide for novices.

Download or read book Sugar Y Az car written by and published by . This book was released on 1982 with total page 1170 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Applications of Activated Sludge Models written by Damir Brdjanovic and published by IWA Publishing. This book was released on 2015-02-15 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1982 the International Association on Water Pollution Research and Control (IAWPRC), as it was then called, established a Task Group on Mathematical Modelling for Design and Operation of Activated Sludge Processes. The aim of the Task Group was to create a common platform that could be used for the future development of models for COD and N removal with a minimum of complexity. As the collaborative result of the work of several modelling groups, the Activated Sludge Model No. 1 (ASM1) was published in 1987, exactly 25 years ago. The ASM1 can be considered as the reference model, since this model triggered the general acceptance of wastewater treatment modelling, first in the research community and later on also in practice. ASM1 has become a reference for many scientific and practical projects, and has been implemented (in some cases with modifications) in most of the commercial software available for modelling and simulation of plants for N removal. The models have grown more complex over the years, from ASM1, including N removal processes, to ASM2 (and its variations) including P removal processes, and ASM3 that corrects the deficiencies of ASM1 and is based on a metabolic approach to modelling. So far, ASM1 is the most widely applied. Applications of Activated Sludge Models has been prepared in celebration of 25 years of ASM1 and in tribute to the activated sludge modelling pioneer, the late Professor G.v.R. Marrais. It consists of a dozen of practical applications for ASM models to model development, plant optimization, extension, upgrade, retrofit and troubleshooting, carried out by the members of the Delft modelling group over the last two decades.

Download or read book Statistical Data Editing Methods and techniques written by United Nations. Statistical Commission and published by . This book was released on 1994 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first volume defined statistical data editing and presented associated methods and software. This volume, containing some 30 contributions divided into six chapters, addresses how to solve individual data editing tasks, focusing on efficient techniques for data editing operations and for evaluat

Download or read book Revista mexicana de f sica written by and published by . This book was released on 2005 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Multicriteria Decision Aid Classification Methods written by Michael Doumpos and published by Springer Science & Business Media. This book was released on 2006-04-18 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book discusses a new approach to the classification problem following the decision support orientation of multicriteria decision aid. The book reviews the existing research on the development of classification methods, investigating the corresponding model development procedures, and providing a thorough analysis of their performance both in experimental situations and real-world problems from the field of finance. Audience: Researchers and professionals working in management science, decision analysis, operations research, financial/banking analysis, economics, statistics, computer science, as well as graduate students in management science and operations research.

Download or read book Chemical Reaction Engineering written by Octave Levenspiel and published by John Wiley & Sons. This book was released on 1998-09-01 with total page 689 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical reaction engineering is concerned with the exploitation of chemical reactions on a commercial scale. It's goal is the successful design and operation of chemical reactors. This text emphasizes qualitative arguments, simple design methods, graphical procedures, and frequent comparison of capabilities of the major reactor types. Simple ideas are treated first, and are then extended to the more complex.

Download or read book Cochrane Handbook for Systematic Reviews of Interventions written by Julian P. T. Higgins and published by Wiley. This book was released on 2008-11-24 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: Healthcare providers, consumers, researchers and policy makers are inundated with unmanageable amounts of information, including evidence from healthcare research. It has become impossible for all to have the time and resources to find, appraise and interpret this evidence and incorporate it into healthcare decisions. Cochrane Reviews respond to this challenge by identifying, appraising and synthesizing research-based evidence and presenting it in a standardized format, published in The Cochrane Library (www.thecochranelibrary.com). The Cochrane Handbook for Systematic Reviews of Interventions contains methodological guidance for the preparation and maintenance of Cochrane intervention reviews. Written in a clear and accessible format, it is the essential manual for all those preparing, maintaining and reading Cochrane reviews. Many of the principles and methods described here are appropriate for systematic reviews applied to other types of research and to systematic reviews of interventions undertaken by others. It is hoped therefore that this book will be invaluable to all those who want to understand the role of systematic reviews, critically appraise published reviews or perform reviews themselves.

Download or read book Biological Wastewater Treatment written by Mogens Henze and published by IWA Publishing (International Water Assoc). This book was released on 1881 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: For information on the online course in Biological Wastewater Treatment from UNESCO-IHE, visit: http://www.iwapublishing.co.uk/books/biological-wastewater-treatment-online-course-principles-modeling-and-design Over the past twenty years, the knowledge and understanding of wastewater treatment have advanced extensively and moved away from empirically-based approaches to a first principles approach embracing chemistry, microbiology, physical and bioprocess engineering, and mathematics. Many of these advances have matured to the degree that they have been codified into mathematical models for simulation with computers. For a new generation of young scientists and engineers entering the wastewater treatment profession, the quantity, complexity and diversity of these new developments can be overwhelming, particularly in developing countries where access is not readily available to advanced level tertiary education courses in wastewater treatment. Biological Wastewater Treatment addresses this deficiency. It assembles and integrates the postgraduate course material of a dozen or so professors from research groups around the world that have made significant contributions to the advances in wastewater treatment. The book forms part of an internet-based curriculum in biological wastewater treatment which also includes: Summarized lecture handouts of the topics covered in book Filmed lectures by the author professors Tutorial exercises for students self-learning Upon completion of this curriculum the modern approach of modelling and simulation to wastewater treatment plant design and operation, be it activated sludge, biological nitrogen and phosphorus removal, secondary settling tanks or biofilm systems, can be embraced with deeper insight, advanced knowledge and greater confidence.